Promotional value expires Jan 31, 2018. Amount paid never expires. Limit 10 per person, may buy 10 additional as gifts. Valid only for option purchased. Cambridge Butterfly Conservatory is closed on Mondays from October 15 to March 1. The Conservatory is also closed November 6-10, 13-16 2017 and December 18-26 2017. Not to be combined with any other discounts, coupons, or offers. No cash back. No partial redemptions. Taxes included. Must use promotional value in 1 visit. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Offer is not eligible for our promo codes or other discounts. Learn about Strike-Through Pricing and Savings